He has the knowledge and knows the content very well however I would say his conduct towards students needs improvement and he is more suited to lecturing at university. Can also be very effective towards students!!
Brilliant man. Never appreciated him in the lower years but really regretting terroring him later on. If you actually pay attention hes a great teacher - L.S
higher up the school you get, the more helpful he is, you appreciate how clever he is, GENIUS!